particles afectors upgrade and timer rework

modules/particle.otpa

@@ -1,16 +1,21 @@
 ParticleSystem
   AttractionAffector
+    delay: 0
+    duration: 12
     destination: 200 200
     acceleration: 64
     velocity-reduction-percent: 0
 
   Emitter
     position: 200 264
-    duration: 12
-    burstRate: 2
+    duration: 2
+    burstRate: 0.2
     burstCount: 1
-    delay: 0.5
-    particle-duration: 9999
+    delay: 0
+    
+    particle-ignore-physics-after: 999
+
+    particle-duration: 12
     particle-position-radius: 0
     particle-velocity: 32
     particle-velocity-angle: 0
@@ -21,9 +26,12 @@ ParticleSystem
 
   Emitter
     position: 200 200
-    burstRate: 9999999999
+    burstRate: 13
     burstCount: 1
-    particle-duration: 9999999
+    duration: 12
+
+    particle-duration: 12
+
     particle-position-radius: 0
     particle-velocity: 0
     particle-velocity-angle: 0

src/framework/graphics/particle.cpp

@@ -24,7 +24,7 @@
 #include "graphics.h"
 #include <framework/core/clock.h>
 
-Particle::Particle(const Point& pos, const Size& size, const PointF& velocity, const PointF& acceleration, float duration, const Color& color, TexturePtr texture)
+Particle::Particle(const Point& pos, const Size& size, const PointF& velocity, const PointF& acceleration, float duration, float ignorePhysicsAfter, const Color& color, TexturePtr texture)
 {
     m_rect = Rect(pos, size);
     m_position = PointF(pos.x, pos.y);
@@ -34,8 +34,8 @@ Particle::Particle(const Point& pos, const Size& size, const PointF& velocity, c
     m_color = color;
     m_texture = texture;
     m_duration = duration;
-    m_startTime = g_clock.time();
-    m_lastUpdateTime = g_clock.time();
+    m_ignorePhysicsAfter = ignorePhysicsAfter;
+    m_elapsedTime = 0;
     m_finished = false;
 }
 
@@ -52,17 +52,17 @@ void Particle::render()
     }
 }
 
-void Particle::update()
+void Particle::update(double elapsedTime)
 {
-    float elapsedTime = g_clock.timeElapsed(m_lastUpdateTime);
-    m_lastUpdateTime = g_clock.time();
-
     // check if finished
-    if(m_duration > 0 && g_clock.timeElapsed(m_startTime) >= m_duration) {
+    if(m_duration > 0 && m_elapsedTime >= m_duration) {
         m_finished = true;
         return;
     }
 
+    m_elapsedTime += elapsedTime;
+
+    if(m_ignorePhysicsAfter < 0 || m_elapsedTime < m_ignorePhysicsAfter ) {
         // update position
         PointF delta = m_velocity * elapsedTime;
         delta.y *= -1; // painter orientate Y axis in the inverse direction
@@ -73,3 +73,4 @@ void Particle::update()
 
         m_rect.moveTo((int)m_position.x - m_size.width() / 2, (int)m_position.y - m_size.height() / 2);
     }
+}

src/framework/graphics/particle.h

@@ -28,10 +28,10 @@
 
 class Particle {
 public:
-    Particle(const Point& pos, const Size& size, const PointF& velocity, const PointF& acceleration, float duration, const Color& color = Fw::white, TexturePtr texture = nullptr);
+    Particle(const Point& pos, const Size& size, const PointF& velocity, const PointF& acceleration, float duration, float ignorePhysicsAfter, const Color& color = Fw::white, TexturePtr texture = nullptr);
 
     void render();
-    void update();
+    void update(double elapsedTime);
 
     bool hasFinished() { return m_finished; }
 
@@ -49,9 +49,8 @@ private:
     PointF m_acceleration;
     Size m_size;
     Rect m_rect;
-    float m_duration;
-    double m_startTime;
-    double m_lastUpdateTime;
+    float m_duration, m_ignorePhysicsAfter;
+    double m_elapsedTime;
     bool m_finished;
 };
 

src/framework/graphics/particleaffector.cpp

@@ -26,8 +26,64 @@
 
 #define DEG_TO_RAD (acos(-1)/180.0)
 
+ParticleAffector::ParticleAffector()
+{
+    m_active = false;
+    m_finished = false;
+    m_delay = 0;
+    m_duration = 0;
+    m_elapsedTime = 0;
+}
+
+void ParticleAffector::update(double elapsedTime)
+{
+    if(m_duration > 0 && m_elapsedTime >= m_duration + m_delay) {
+        m_finished = true;
+        return;
+    }
+
+    if(!m_active && m_elapsedTime > m_delay)
+        m_active = true;
+
+    m_elapsedTime += elapsedTime;
+}
+
+bool ParticleAffector::load(const OTMLNodePtr& node)
+{
+    float minDelay = 0, maxDelay = 0;
+    float minDuration = -1, maxDuration = -1;
+
+    for(const OTMLNodePtr& childNode : node->children()) {
+        if(childNode->tag() == "delay") {
+            minDelay = childNode->value<float>();
+            maxDelay = childNode->value<float>();
+        }
+        else if(childNode->tag() == "min-delay")
+            minDelay = childNode->value<float>();
+        else if(childNode->tag() == "max-delay")
+            maxDelay = childNode->value<float>();
+
+        if(childNode->tag() == "duration") {
+            minDuration = childNode->value<float>();
+            maxDuration = childNode->value<float>();
+        }
+        else if(childNode->tag() == "min-duration")
+            minDuration = childNode->value<float>();
+        else if(childNode->tag() == "max-duration")
+            maxDuration = childNode->value<float>();
+    }
+
+    m_delay = Fw::randomRange(minDelay, maxDelay);
+    m_duration = Fw::randomRange(minDuration, maxDuration);
+
+    return true;
+}
+
 bool GravityAffector::load(const OTMLNodePtr& node)
 {
+    if(!ParticleAffector::load(node))
+        return false;
+
     m_angle = 270 * DEG_TO_RAD;
     m_gravity = 9.8;
 
@@ -40,8 +96,11 @@ bool GravityAffector::load(const OTMLNodePtr& node)
     return true;
 }
 
-void GravityAffector::update(const ParticlePtr& particle, double elapsedTime)
+void GravityAffector::updateParticle(const ParticlePtr& particle, double elapsedTime)
 {
+    if(!m_active)
+        return;
+
     PointF velocity = particle->getVelocity();
     velocity += PointF(m_gravity * elapsedTime * cos(m_angle), m_gravity * elapsedTime * sin(m_angle));
     particle->setVelocity(velocity);
@@ -49,6 +108,9 @@ void GravityAffector::update(const ParticlePtr& particle, double elapsedTime)
 
 bool AttractionAffector::load(const OTMLNodePtr& node)
 {
+    if(!ParticleAffector::load(node))
+        return false;
+
     m_acceleration = 32;
 
     for(const OTMLNodePtr& childNode : node->children()) {
@@ -62,17 +124,16 @@ bool AttractionAffector::load(const OTMLNodePtr& node)
     return true;
 }
 
-void AttractionAffector::update(const ParticlePtr& particle, double elapsedTime)
+void AttractionAffector::updateParticle(const ParticlePtr& particle, double elapsedTime)
 {
-    // must change velocity angle, keeping modulus.
+    if(!m_active)
+        return;
 
     PointF pPosition = particle->getPosition();
-
     PointF d = PointF(m_destination.x - pPosition.x, pPosition.y - m_destination.y);
     if(d.length() == 0)
         return;
 
     PointF pVelocity = particle->getVelocity() + (d / d.length() * m_acceleration * elapsedTime);
-
     particle->setVelocity(pVelocity - pVelocity * m_reduction/100.0 * elapsedTime);
 }

src/framework/graphics/particleaffector.h

@@ -28,14 +28,25 @@
 
 class ParticleAffector {
 public:
-    virtual bool load(const OTMLNodePtr&) { return true; }
-    virtual void update(const ParticlePtr&, double) {}
+    ParticleAffector();
+    virtual ~ParticleAffector() { dump << "ParticleAffector deleted"; }
+
+    void update(double elapsedTime);
+    virtual bool load(const OTMLNodePtr& node);
+    virtual void updateParticle(const ParticlePtr&, double) {}
+
+    bool hasFinished() { return m_finished; }
+
+protected:
+    bool m_finished, m_active;
+    float m_delay, m_duration;
+    double m_elapsedTime;
 };
 
 class GravityAffector : public ParticleAffector {
 public:
     bool load(const OTMLNodePtr& node);
-    void update(const ParticlePtr& particle, double elapsedTime);
+    void updateParticle(const ParticlePtr& particle, double elapsedTime);
 
 private:
     float m_angle, m_gravity;
@@ -44,7 +55,7 @@ private:
 class AttractionAffector : public ParticleAffector {
 public:
     bool load(const OTMLNodePtr& node);
-    void update(const ParticlePtr& particle, double elapsedTime);
+    void updateParticle(const ParticlePtr& particle, double elapsedTime);
 
 private:
     Point m_destination;

src/framework/graphics/particleemitter.cpp

@@ -38,7 +38,7 @@ ParticleEmitter::ParticleEmitter(const ParticleSystemPtr& parent)
     m_delay = 0;
     m_burstRate = 1; m_burstCount = 32;
     m_currentBurst = 0;
-    m_startTime = g_clock.time();
+    m_elapsedTime = 0;
     m_finished = false;
 
     // particles default configuration. (make them reasonable for user detect missing properties on scripts)
@@ -50,6 +50,7 @@ ParticleEmitter::ParticleEmitter(const ParticleSystemPtr& parent)
     m_pMaxSize = Size(32, 32);
     m_pMinDuration = 0;
     m_pMaxDuration = 10;
+    m_pIgnorePhysicsAfter = -1;
     m_pMinVelocity = 32;
     m_pMaxVelocity = 64;
     m_pMinVelocityAngle = 0;
@@ -139,6 +140,8 @@ bool ParticleEmitter::load(const OTMLNodePtr& node)
             m_pMinDuration = childNode->value<float>();
         else if(childNode->tag() == "particle-max-duration")
             m_pMaxDuration = childNode->value<float>();
+        else if(childNode->tag() == "particle-ignore-physics-after")
+            m_pIgnorePhysicsAfter = childNode->value<float>();
 
         // visual
         else if(childNode->tag() == "particle-size") {
@@ -157,24 +160,20 @@ bool ParticleEmitter::load(const OTMLNodePtr& node)
     return true;
 }
 
-void ParticleEmitter::update()
+void ParticleEmitter::update(double elapsedTime)
 {
-    float elapsedTime = g_clock.timeElapsed(m_startTime);
-
-    // only start updating after delay
-    if(elapsedTime < m_delay)
-        return;
-
-    // setup a new start time
-    elapsedTime -= m_delay;
-
     // check if finished
-    if(m_duration > 0 && elapsedTime > m_duration) {
+    if(m_duration > 0 && m_elapsedTime >= m_duration + m_delay) {
         m_finished = true;
         return;
     }
 
-    int currentBurst = (elapsedTime / m_burstRate) + 1;
+    m_elapsedTime += elapsedTime;
+
+    if(m_elapsedTime - elapsedTime < m_delay)
+        return;
+
+    int currentBurst = std::floor((m_elapsedTime - m_delay) / m_burstRate) + 1;
     for(int b = m_currentBurst; b < currentBurst; ++b) {
 
         // every burst created at same position.
@@ -199,7 +198,7 @@ void ParticleEmitter::update()
             PointF pAcceleration(pAccelerationAbs * cos(pAccelerationAngle), pAccelerationAbs * sin(pAccelerationAngle));
 
             ParticleSystemPtr particleSystem = m_parent.lock();
-            particleSystem->addParticle(ParticlePtr(new Particle(pPosition, pSize, pVelocity, pAcceleration, pDuration, m_pColor, m_pTexture)));
+            particleSystem->addParticle(ParticlePtr(new Particle(pPosition, pSize, pVelocity, pAcceleration, pDuration, m_pIgnorePhysicsAfter, m_pColor, m_pTexture)));
         }
     }
 

src/framework/graphics/particleemitter.h

@@ -36,7 +36,7 @@ public:
 
     bool load(const OTMLNodePtr& node);
 
-    void update();
+    void update(double elapsedTime);
 
     bool hasFinished() { return m_finished; }
 
@@ -46,7 +46,7 @@ private:
     // self related
     Point m_position;
     float m_duration, m_delay;
-    double m_startTime;
+    double m_elapsedTime;
     bool m_finished;
     float m_burstRate;
     int m_currentBurst, m_burstCount;
@@ -67,7 +67,7 @@ private:
     float m_pMinAccelerationAngle, m_pMaxAccelerationAngle;
 
     // particles duration
-    float m_pMinDuration, m_pMaxDuration;
+    float m_pMinDuration, m_pMaxDuration, m_pIgnorePhysicsAfter;
 
     // visual ralated
     Color m_pColor;

src/framework/graphics/particlesystem.cpp

@@ -68,8 +68,7 @@ void ParticleSystem::render()
 
 void ParticleSystem::update()
 {
-    float elapsedTime = g_clock.timeElapsed(m_lastUpdateTime);
-    m_lastUpdateTime = g_clock.time();
+    static const double delay = 0.0166; // 60 updates/s
 
     // check if finished
     if(m_particles.empty() && m_emitters.empty()) {
@@ -77,6 +76,14 @@ void ParticleSystem::update()
         return;
     }
 
+    // check time
+    double elapsedTime = g_clock.timeElapsed(m_lastUpdateTime);
+    if(elapsedTime < delay)
+        return;
+    m_lastUpdateTime = g_clock.time() - std::fmod(elapsedTime, delay);
+
+    for(int i = 0; i < elapsedTime / delay; ++i) {
+
         // update emitters
         for(auto it = m_emitters.begin(), end = m_emitters.end(); it != end;) {
             const ParticleEmitterPtr& emitter = *it;
@@ -84,7 +91,18 @@ void ParticleSystem::update()
                 it = m_emitters.erase(it);
                 continue;
             }
-        emitter->update();
+            emitter->update(delay);
+            ++it;
+        }
+
+        // update affectors
+        for(auto it = m_affectors.begin(), end = m_affectors.end(); it != end;) {
+            const ParticleAffectorPtr& affector = *it;
+            if(affector->hasFinished()) {
+                it = m_affectors.erase(it);
+                continue;
+            }
+            affector->update(delay);
             ++it;
         }
 
@@ -98,9 +116,10 @@ void ParticleSystem::update()
 
             // pass particles through affectors
             for(const ParticleAffectorPtr& particleAffector : m_affectors)
-            particleAffector->update(particle, elapsedTime);
+                particleAffector->updateParticle(particle, delay);
 
-        particle->update();
+            particle->update(delay);
             ++it;
         }
     }
+}